:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f7f9fc;
  --border: #e4e9f2;
  --border-strong: #cfd8e6;
  --text: #0f172a;
  --text-2: #4b5b74;
  --muted: #7a8aa1;
  --primary: #1d4ed8;
  --primary-600: #1e40af;
  --primary-50: #eff4ff;
  --primary-100: #dbe6ff;
  --success: #058c5d;
  --success-50: #e6f7f0;
  --danger: #b42318;
  --danger-50: #fdecea;
  --warn: #b45309;
  --shadow: 0 1px 2px rgba(15,23,42,.04), 0 4px 20px rgba(15,23,42,.04);
  --radius: 10px;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
}

/* Topbar */
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: #fff;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  width: 36px; height: 36px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), #4f7ef7);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 6px 14px rgba(29,78,216,.22);
  position: relative;
}
.logo::after {
  content: ""; position: absolute; inset: 9px;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'><path d='M10 1.5a8.5 8.5 0 100 17 8.5 8.5 0 000-17zm0 3.2l2.06 4.18 4.6.67-3.33 3.25.79 4.58L10 15.2l-4.12 2.18.79-4.58L3.34 9.55l4.6-.67L10 4.7z'/></svg>") no-repeat center / contain;
  opacity: .95;
}
.brand h1 { font-size: 17px; margin: 0; letter-spacing: .2px; }
.brand .sub { margin: 0; color: var(--muted); font-size: 12.5px; }
.card-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; border: 1px solid var(--border);
  border-radius: 999px; font-family: var(--mono); font-size: 12.5px;
  color: var(--text-2); background: var(--surface-alt);
}
.card-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 3px var(--success-50); }

/* Container */
.container {
  max-width: 1120px; margin: 24px auto 60px; padding: 0 32px;
  display: flex; flex-direction: column; gap: 20px;
}

/* Panel */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.panel-head h2 { font-size: 14px; letter-spacing: .3px; margin: 0; color: var(--text); font-weight: 600; }

.task-id {
  font-family: var(--mono); color: var(--muted); font-size: 12px;
  padding: 4px 10px; background: var(--surface-alt); border-radius: 6px;
}

/* Segmented control */
.segmented {
  display: inline-flex; padding: 3px; background: var(--surface-alt);
  border: 1px solid var(--border); border-radius: 8px; gap: 2px;
}
.segmented button {
  border: 0; background: transparent; padding: 6px 12px;
  font-size: 12.5px; color: var(--text-2); border-radius: 6px;
  cursor: pointer; transition: all .12s;
}
.segmented button:hover { color: var(--primary); }
.segmented button.on {
  background: #fff; color: var(--primary);
  box-shadow: 0 1px 2px rgba(15,23,42,.06); font-weight: 600;
}

/* Tabs */
.tabs { display: flex; gap: 4px; margin-bottom: 12px; border-bottom: 1px solid var(--border); }
.tabs button {
  border: 0; background: transparent; padding: 8px 14px;
  font-size: 13px; color: var(--muted); cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs button.on { color: var(--primary); border-color: var(--primary); font-weight: 600; }

.input-pane.hide { display: none; }

/* Textarea */
textarea {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: 8px;
  font-family: var(--mono); font-size: 12.5px; color: var(--text);
  resize: vertical; background: #fff; outline: none;
  transition: border-color .12s, box-shadow .12s;
}
textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-50); }

/* Dropzone */
.dropzone {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 36px; border: 1.5px dashed var(--border-strong);
  border-radius: 10px; cursor: pointer; color: var(--muted);
  transition: all .12s; background: var(--surface-alt);
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--primary); background: var(--primary-50); color: var(--primary);
}
.dz-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: #fff; color: var(--primary); font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
}
.dz-text { font-size: 13.5px; font-weight: 600; }
.dz-sub { font-size: 12px; }
.filename {
  margin-top: 10px; padding: 8px 12px;
  background: var(--primary-50); border-radius: 6px;
  font-family: var(--mono); font-size: 12.5px; color: var(--primary-600);
}
.filename.hide { display: none; }

/* Hint */
.hint {
  margin-top: 10px; color: var(--muted); font-size: 12.5px;
}
.hint b { color: var(--primary); font-weight: 600; }

/* Grid 4 */
.grid4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
@media (max-width: 900px) { .grid4 { grid-template-columns: 1fr 1fr; } }

.field label {
  display: block; font-size: 12.5px; color: var(--text-2);
  margin-bottom: 6px; font-weight: 600;
}
.field .mini { color: var(--muted); font-weight: 400; margin-left: 6px; }
input[type="number"] {
  width: 100%; padding: 8px 12px; height: 34px;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 13px; color: var(--text); outline: none;
  transition: border-color .12s, box-shadow .12s;
}
input[type="number"]:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-50); }

/* Actions */
.actions {
  margin-top: 18px; display: flex; align-items: center; gap: 12px;
}
button.primary {
  background: var(--primary); color: #fff; border: 0;
  padding: 10px 22px; border-radius: 8px; font-size: 13.5px;
  font-weight: 600; cursor: pointer;
  box-shadow: 0 1px 2px rgba(29,78,216,.4), 0 6px 14px rgba(29,78,216,.18);
  transition: all .12s;
}
button.primary:hover { background: var(--primary-600); transform: translateY(-1px); }
button.primary:disabled { background: #a2b6d9; cursor: not-allowed; box-shadow: none; transform: none; }

button.ghost {
  background: #fff; color: var(--text-2); border: 1px solid var(--border);
  padding: 8px 14px; border-radius: 8px; font-size: 12.5px;
  cursor: pointer; transition: all .12s;
}
button.ghost:hover { border-color: var(--primary); color: var(--primary); }
.hide { display: none !important; }

.run-info { color: var(--muted); font-size: 12.5px; }

/* Progress */
.progress { margin-bottom: 18px; }
.bar {
  height: 8px; background: var(--surface-alt);
  border-radius: 999px; overflow: hidden; margin-bottom: 14px;
  border: 1px solid var(--border);
}
.fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--primary), #4f7ef7);
  transition: width .35s;
}
.stat-row {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px;
}
.stat-row > div {
  background: var(--surface-alt); border: 1px solid var(--border);
  border-radius: 8px; padding: 10px 12px; text-align: center;
}
.stat-num { display: block; font-size: 20px; font-weight: 700; color: var(--text); font-family: var(--mono); }
.stat-num.ok { color: var(--success); }
.stat-num.bad { color: var(--danger); }
.stat-lbl { font-size: 11.5px; color: var(--muted); }
@media (max-width: 900px) { .stat-row { grid-template-columns: repeat(3, 1fr); } }

/* Log */
.log-wrap { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.log-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px; background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-2);
}
.autoscroll { color: var(--muted); font-size: 12px; }
.autoscroll input { vertical-align: middle; margin-right: 4px; }
.log {
  margin: 0; padding: 12px 14px;
  height: 280px; overflow-y: auto; overflow-x: hidden;
  background: #0f172a; color: #d4dbe8;
  font-family: var(--mono); font-size: 12px; line-height: 1.6;
  white-space: pre-wrap; word-break: break-all;
}
.log .ln-ok { color: #7ee2b8; }
.log .ln-bad { color: #ff9c8f; }
.log .ln-warn { color: #ffca7a; }
.log .ln-info { color: #9ec2ff; }
.log .ln-dim { color: #7a8aa1; }
.log .tag { display: inline-block; padding: 0 6px; margin-right: 6px; border-radius: 4px; font-size: 11px; }
.log .tag-ok { background: rgba(126,226,184,.16); color: #7ee2b8; }
.log .tag-bad { background: rgba(255,156,143,.16); color: #ff9c8f; }
.log .tag-info { background: rgba(158,194,255,.16); color: #9ec2ff; }
.log .tag-warn { background: rgba(255,202,122,.16); color: #ffca7a; }

/* Result */
.result-actions { display: flex; gap: 8px; }
#resultBox {
  height: 220px; font-family: var(--mono); font-size: 12.5px;
  background: var(--surface-alt);
}

.foot {
  text-align: center; color: var(--muted); font-size: 12px;
  padding: 20px 0 40px;
}

/* Proxy box */
.proxy-box {
  margin-top: 16px; padding-top: 14px;
  border-top: 1px dashed var(--border);
}
.proxy-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.switch-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 600; color: var(--text); cursor: pointer;
  user-select: none;
}
.switch-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--primary); cursor: pointer; }
#proxyBody { margin-top: 10px; }
#proxies { width: 100%; resize: vertical; }


/* Auth overlay */
.login-overlay {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(10, 14, 22, .82); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
}
.login-card {
  width: 340px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px 26px; display: flex; flex-direction: column; gap: 12px;
}
.login-card h2 { margin: 0; font-size: 18px; }
.login-card .sub { margin: 0 0 6px; color: var(--muted); font-size: 12.5px; }
.login-card input {
  width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface-alt); color: var(--text); font-size: 14px;
}
.login-card input:focus { outline: none; border-color: var(--primary); }
.login-err { color: #ff9c8f; font-size: 12.5px; min-height: 16px; }


/* Card row */
.card-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 14px; padding: 10px 14px;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface-alt);
}
.card-row-label { color: var(--muted); font-size: 13px; margin-right: 10px; }
.card-row-val { font-family: var(--mono); font-size: 13.5px; }